theory technology and applications a tribute to roger needham

... institutions So too, are informal rules that shape and limit transactions, like common business practices, cultural attitudes and values, and reputation, and the social constructs that guide and enable ... production: capital, people and land - and land is always far cheaper outside cities than inside Why don't capital and people move outside, combining themselves with cheaper land and increasing profits?" ... particular problems and their solutions (how to knead bread) and then to work to translate and codify this information so that it can be used by the entire organization (to design a bread making machine)...

Ngày tải lên: 24/01/2014, 00:20

... University’s Mathematical Laboratory—what is now known as the Computer Laboratory—in 1962, as a Senior Assistant in Research Although his Ph.D was on an applications topic, Roger s career has been that ... mail objects and general database objects Issues for capability-based access control A capability contains an object name and some access rights The necessary properties of a capability are as ... love and friendship and deep admiration Enjoy This page intentionally left blank On Access Control, Data Integration, and Their Languages Martín Abadi This paper considers the goals and features...

Ngày tải lên: 31/05/2014, 23:49

... Chapter Femtosecond Laser Cavity Characterization 35 E Nava-Palomares, F Acosta-Barbosa, S Camacho-López and M Fernández-Guasti Chapter All Solid-State Passively Mode-Locked Ultrafast Lasers Based ... Laser Pulses 219 V.I Mazhukin Chapter Direct Writing in Polymers with Femtosecond Laser Pulses: Physics and Applications 277 Kallepalli Lakshmi Narayana Deepak, Venugopal Rao Soma and Narayana ... Rossi, A Yu Ivanov, S V Vasiliev, Roman V Dyukin, George A Martsinovskiy, Olga N Sergaeva, Galina D Shandybina, Vera V Svirina, Eugeny B Yakovlev, V.I Mazhukin, Kallepalli Lakshmi Narayana Deepak,...

Ngày tải lên: 29/06/2014, 13:20

... critical flux helps to understand fouling and to guide the operation in theory, but difficulty appears in practical applications as (i) its value may be too low to be practically applied and (ii) ... Membrane Technology Membrane Technology A Practical Guide to Membrane Technology and Applications in Food and Bioprocessing Edited by Z.F Cui and H.S Muralidhara AMSTERDAM • BOSTON • HEIDELBERG ... net-like material is placed to provide space for the permeate removal, and on the other side of the flat plate, another sheet membrane and another net-like material are placed in mirror to form a sandwich-like...

Ngày tải lên: 02/04/2014, 15:04

... Breslau (Silesia, now Wroclaw, Poland) with an opportunity for a Habilitation (qualification examination for lecturing at a university) and a modest annual salary of 400 talers, which was the usual ... richness of material and clear insight into it: as a speaker he has no advantages — there is nothing like fluency about him, and yet a clear eye and understanding make it dispensable: without an effort ... starting salary of an associate professor at that time (This was not too bad an offer for a 21-year-old young man without any final examination.) Von Altenstein wanted Dirichlet to move to Breslau...

Ngày tải lên: 27/06/2014, 14:20

... (qualification examination for lecturing at a university) and a modest annual salary of 400 talers, which was the usual starting salary of an associate professor at that time (This was not too bad an offer ... Analytic Number Theory A Tribute to Gauss and Dirichlet Clay Mathematics Proceedings Volume Analytic Number Theory A Tribute to Gauss and Dirichlet William Duke Yuri Tschinkel Editors American ... Breslau was to habilitate (qualify as a university lecturer) According to the rules in force he had a) to give a trial lecture, b) to write a thesis (Habilitationsschrift) in Latin, and c) to defend...

Ngày tải lên: 06/08/2014, 01:21

... richness of material and clear insight into it: as a speaker he has no advantages — there is nothing like fluency about him, and yet a clear eye and understanding make it dispensable: without an effort ... problems, and also travelled to Italy They were accompanied by the Swiss teacher L Schl¨fli (1814–1895), who was a genius in a languages and helped as an interpreter and in return got mathematical instruction ... of the theory of binary quadratic forms has the great advantage of laying the bridge to the theory of quadratic fields: Whenever D is a fundamental discriminant, the classes of binary quadratic...

Ngày tải lên: 06/08/2014, 01:21

... x1 x2 + x2 singularity A1 2A1 2A1 A2 3A1 A1 + A2 A3 A3 4A1 2A1 + A2 A1 + A3 A4 D4 2A1 + A3 D5 AN OVERVIEW OF MANIN’S CONJECTURE FOR DEL PEZZO SURFACES 43 Apart from the surfaces of type vi, vii, ... singular del Pezzo surfaces of degree that arise as equivariant compactifications of Ga × Gm , but that are not already equivariant compactifications of G2 or G2 This is a natural class of varieties ... several of his memoirs) to give an elementary character to arithmetical theories which, as they appear in the work of Gauss, are tedious and obscure; and he has done much to popularize the theory...

Ngày tải lên: 06/08/2014, 01:21

... of Davenport and Lewis [DL66], Cook [C72], Vaughan [V77] and Baker and Br¨dern [BB88] spanning an interval of u more than twenty years In a recent collaboration [BW06] we have been able to add ... delicate footwork in §4 establishes a mean value estimate that, in all circumstances save for particularly pathological situations, leads in §5 to a viable complementary minor arc estimate sufficient ... types I and II Systems of type II split into two almost separate diagonal cubic equations linked by a single variable Here we may apply the main ideas from our recent collaboration with Kawada [BKW0 1a] ...

Ngày tải lên: 06/08/2014, 01:21

... with r ≥ and s − r ≥ As in the discussion of type II systems, one may make changes of variable so as to ensure that (a1 , , ar−1 ) = and (br+1 , , bs−1 ) = 1, and in addition that all of ... picture and gave a spectral interpretation to the moment problem Unfortunately, an old paper of Anton Good [Goo86], going back to 1985, which had much earlier outlined an alternative approach to the ... 1918 Remarkably, Gauss also made a similar conjecture for the average value of h(d) log( d ), where d ranges over positive discriminants and d is the fundamen√ tal unit of the real quadratic field...

Ngày tải lên: 06/08/2014, 01:21

... 98 ADRIAN DIACONU AND DORIAN GOLDFELD As a function of v and w, this integral can be meromorphically continued by shifting the line (s) = For instance, to obtain continuation to a region containing ... Sarnak – Random matrices, Frobenius eigenvalues, and monodromy, American Mathematical Society Colloquium Publications, vol 45, American Mathematical Society, Providence, RI, 1999 [KS00] J P Keating ... provides a different approach for the result of (Kudla, Rapoport and) Yang [Yan04] in this case, part of Kudla’s general program on realizing generating series in arithmetic geometry as modular forms,...

Ngày tải lên: 06/08/2014, 01:21

... Duke [Duk88] and Katok and Sarnak [KS93] The Maass lift uses a similar theta kernel associated to a quadratic space of signature (2, 1) and maps rapidly decreasing functions on M to forms of weight ... method a priori is also available for the Shimura curve case (as opposed to the Kronecker limit formula), and one can hope to have a new approach to some aspects (say, at least for the Archimedean ... FUNKE Remark 3.11 As this point we are not aware of any particular application of the above formula in the case when f is a weak Maass form and not weakly holomorphic However, it is important to see...

Ngày tải lên: 06/08/2014, 01:21

... e National Science Foundation and the American Institute of Mathematics (AIM) c 2007 Andrew Granville and K Soundararajan 141 142 ANDREW GRANVILLE AND K SOUNDARARAJAN quadratic reciprocity and ... contrasting this account with [GTc] as well as the expository accounts by Kra [Kra06] and Tao [Tao0 6a, Tao06b] As we remarked, this article is based on lectures given to a general audience It was ... Montreal, QC H3C 3J7, Canada E-mail address: andrew@dms.umontreal.ca Department of Mathematics, Stanford University, Bldg 380, 450 Serra Mall, Stanford, CA 94305-2125, USA E-mail address: ksound@math.stanford.edu...

Ngày tải lên: 06/08/2014, 01:21

... non-vanishing of central values of automorphic Lfunctions arise naturally in several contexts ranging from analytic number theory, quantum chaos and arithmetic geometry and can be approached by a ... upper-half plane To the quadratic field K = Q( −D) – where we always assume that −D is a fundamental discriminant – and each ideal class x of the √ maximal order OK of Q( −D) there is associated a ... and suppose that A ⊆ G is a set with cardinality αN What is T4 (A) ? Examples 1,2 and make perfect sense here, and we see once again that there is no immediately satisfactory answer to Question...

Ngày tải lên: 06/08/2014, 01:21

... ClK , and we will eventually want to find certain elements in the group algebra of Gal(H/K) which annihilate this representation, and on the other hand not have coefficients that are too large This ... definite quaternion algebra ramified at q and ∞ Let Oq be a choice of a maximal order Let S be the set of classes for Bq , i.e the set of classes of left ideals for Oq To each s ∈ S is associated an ... exists a class group character χ ∈ ClK such that L( , f ⊗ χ) = is evidently not as well-behaved, because the size of the class group of K may fluctuate wildly A suitable analogue to the imaginary case...

Ngày tải lên: 06/08/2014, 01:21

... the Laplacian, and is real analytic Special values, in s, of these series provide examples of half-integral weight weak Maass forms A weak Maass form of weight k for the group Γ0 (4) is a smooth ... series by a( n)q n | U (d) := a( dn)q n , a( n)q n (3.6) | V (d) := a( n)q dn and (3.7) The proof now follows from generalizations of classical facts about the U and V operators to spaces of weakly holomorphic ... leads to the quadratic equation pc pd − a b z + z − = 4 Using some class number relations, and the fact that Hilbert class polynomials are irreducible, we simply need to show that for a negative...

Ngày tải lên: 06/08/2014, 01:21

... in G and the (adelic) trace formula and its stabilization [Lan79] For the case at hand when working over Z, there is the added issue associated with the lack of a local to global principle and ... [Sha99] I R Shafarevich (ed.) – Algebraic geometry V, Encyclopaedia of Mathematical Sciences, vol 47, Springer-Verlag, Berlin, 1999, Fano varieties, A translation of Algebraic geometry (Russian), ... simultaneous quadratic and biquadratic equations”, Math Proc Cambridge Philos Soc 126 (1999), no 2, p 209– 221 [Woo96] T D Wooley – “An a ne slicing approach to certain paucity problems”, in Analytic...

Ngày tải lên: 06/08/2014, 01:21

... Iwaniec – Introduction to the spectral theory of automorphic forms, Biblioteca de la Revista Matem´tica Iberoamericana, Revista Matem´tica Iberoamericana, Madrid, a a 1995 D G James & C Maclachlan ... 2000 Mathematics Subject Classification Primary 11M06 The author is partially supported by the American Institute of Mathematics and the National Science Foundation c 2007 K Soundararajan 239 ... χ)|2 = 2A( χ) (see Lemma below) Let Z = q/2ω(q) and decompose A( χ) as B(χ) + C(χ) where χ (a) χ(b) πab √ Wa , q ab B(χ) = a, b ≥ ab ≤ Z and χ (a) χ(b) πab √ Wa q ab C(χ) = a, b ≥ ab > Z Our main theorem...

Ngày tải lên: 06/08/2014, 01:21

... to polynomial equations in several variables Volume Analytic Number Theory A Tribute to Gauss and Dirichlet A Tribute to Gauss and Dirichlet Articles in this volume are based on talks given at ... primes and small gaps between primes), class groups of binary quadratic forms, various aspects of the theory of L-functions, the theory of modular forms, and the study of rational and integral solutions ... real quadratic fields of discriminant less than x whose class-numbers are divisible by p And if we wanted, say, narrow class-number one rather than class-number a power of 2, we would have to...

Ngày tải lên: 06/08/2014, 01:21

... potential LED applications and the advantages and disadvantages associated with their use That said, perhaps you want to take a moment to grab your favorite drink and a few munchies as we turn our attention ... were approximately years ago That is, approximately years ago, compact Table 1.3  General LED Application Areas Automobiles  Indicator lights   Turn signal lights  Rear brake lighting bar Data Communications ... on a blue LED using GaN was cancelled However, in 1989, Isamu Akasaki was able to use magnesium-doped GaN to achieve conducting material by using an electron beam annealed magnesium-doped GaN A...

Ngày tải lên: 21/12/2016, 10:33